Snow can be used to build structures and sculptures, from simple snowmen:

To larger and more complicated sculptures:

Images taken from http://www.epidemicfun.com/2009/the-largest-smallest-funny-and-most-beautiful-snowman/

http://www.toptenz.net/top-10-fascinating-facts-about-snow.php

and http://www.beijingholiday.com/beijing-winter-tours/harbin-snow-ice-festival.html